Africa Rice Center URL: https://web.archive.org/web/20161029172304/http://www.panoramio.com/user/5514941?with_photo_id=94743859 operator: Panoramio described...
English operator: Panoramio described at URL: https://web.archive.org/web/20161027155812/http://www.panoramio.com/photo/94748184 determination method...